Look for (32‑bit) – Windows XP is 32‑bit in most cases. Direct link example (still active as of 2025): https://www.rarlab.com/rar/wrar602.exe
Or directly use the RARLAB archive: ➡️ https://www.rarlab.com/download.htm
If you just need to on XP, 7‑Zip is the safer, no‑nag choice. If you specifically need WinRAR’s recovery volumes or GUI, version 6.02 works fine.